Approximately 200 enzymes require NAD or NADP+. We will go through some selected functions of NAD and NADP+. The following figures and legends show and describe the functions of NAD and NADP+.
Figure 10.511 NAD is required for glycolysis1
Figure 10.512 NAD is required for the transition reaction and at three different points in the citric acid cycle2
Figure 10.513 NAD is required for fatty acid oxidation
Figure 10.514 Alcohol oxidation; NAD is required by alcohol dehydrogenase, and the MEOS uses NADPH3,4
Figure 10.515 Fatty acid synthesis uses NADPH5
HMG CoA reductase, the rate-limiting enzyme in cholesterol synthesis, uses NADPH. NADPH is also used by the antioxidant enzyme glutathione reductase as shown in the link below6.
| Web Link
–The Glutathione Oxidation Reduction (Redox) Cycle |
References & Links
1. http://en.wikipedia.org/wiki/File:CellRespiration.svg
2. http://en.wikipedia.org/wiki/File:Citric_acid_cycle_with_aconitate_2.svg
3. http://en.wikipedia.org/wiki/File:Ethanol_flat_structure.png
4. https://en.wikipedia.org/wiki/Acetaldehyde#/media/File:Acetaldehyde-2D-flat.svg
5. http://en.wikipedia.org/wiki/Mitochondrion
6. Gropper SS, Smith JL, Groff JL. (2008) Advanced nutrition and human metabolism. Belmont, CA: Wadsworth Publishing.
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